Interior collapsible form for concrete burial-vaults.



J. G. JOHNSON.

INTERIOR COLLAPSIBLE FORM FOR CONCRETE BUBIAL VAULTS.

APPLICATION FILED AUG. 29, 1912.

1,113,012. Patented Oct. 6, 1914.

WITNESSES I I! I ATTORNEYS my Improved collapsible form set up ready JAMES GUTHRIE JOHNSON,

OF CAR'IHAGE, ILLINOIS.

INTERIOR GOLLAPSIBLE FORM FOR CONCRETE BURIAL-VAULTS.

Specification of Letters Patent.

Application filed August 29, 1912. Serial No. 717,701.

To all whom it may concern: I

Be it known that I, JAMES GUTHRIE JoHN- soN, a citizen of the United States, and a resident of Carthage, in the county of Hancock and State of Illinois, have invented a new and useful Improvement in Interior Collapsible Forms for Concrete Burial-Vaults, of which the following is a specification.

y present invention relates to collapsible forms for structural cement work, my object being to provide an interior collapslble form whereby the base, side and end walls of a concrete burial vault may be conveniently formed in such a manner as to permit of the subsequent formation of a top for the vault whereby. the same may be sealed.

A further object of my invention is to provide a form which Wlll be strong and durable, and which may be readily set up and collapsed by unskllled workmen, and which will be strong and durable in use.

With the above in mind, I have shown the preferred embodiment of my invention in the accompanying drawing, forming a part of the specification, and in which,

Figure 1 is a perspective view illustrating for use; Fig. 2 is a vertical transverse section taken therethrough; Fig. 3 is a perspective view of one end wall and the adjacent portion ofone side wall in detached relation Fig. 4 is a transverse vertical section through a burial vault such as may be formed through the use of my invention; and Fig. 5 is a perspective view of one of the top plates which is used to support the top wall of the vault as shown in Fig. 4.

Referring now to these figures, my improvements consist in the provision of a collapsible form embodying. side walls A and and end walls C and D, the side walls being provided at their ends with lower extendlng portions bent inwardly and curved to'form bearings a, b, and the end walls being provided with upper extending portions also bent inwardly and curved to form bearings c, d which are similar to, and adapted to aline with, the bearings a, 6, whereby to provide for the reception of vertical locking bars E, having upper angular ends 6 forming handles.

The several bearings a, b, '0 and d are formed adjacent the inner ends of the extensions of which they constitute a part, these respective extensionsa', b, 0 and (1' being substantially flat and secured against and to the inner surface of the respective walls A, B, C and D.

With the form assembled in the position shown in Fig. 1, the side walls 1 of the vault 2, as shown in Fig. 4, are molded therearound, the upper surfaces of the vault walls being terminated flush with the upper edges of the walls of the form which is permitted to remain until the vault is dried out and is then collapsed and removed by Withdrawing the locking bars E from the alined bearings of the side and end walls, after which the said side and end walls may be readily disengaged and removed.

The ide and end walls of the form are reinforced by horizontally extending reinforcing members in the form of angle bars F, these bars being secured to the faces of the form walls as clearly illustrated. The up er portions of the side Walls A and B are urther provided with supplemental sections of material, G, secured to and against the inner surfaces thereof above their reinforcing members F, and having their upper edges extended substantially above the up per edges of the side walls and bent outwardly and downwardly and inwardly against the outer surfaces of the side walls in order to form hollow ribs 9, outstanding from the upper edges of the side walls, as clearly indicated in Figs. 1 and 2, and substantially rectangular in cross section.

The function of the ribs 9 is to provide longitudinally extending recesses in the innet portions of the upper edges of the vault walls, when the latter are formed in the manner hereinbefore described, which are adapted to receive and support the side edges h of curved plates, one of which is shown at H in Fig. 5, and also indicated in its operative position in Fig. 4 as extending transversely at the upper portion of the vault for supporting its top g It will thus be seen that by the use of my improved form, which is of a strong and lasting character andadapted for assembly and collapsing by unskilled workmen, a burial vault may be quickly and conveniently formed at a convenient spot and in such manner as to provide for the ready and quick formation of a solid top for sealing the same and completing a practically onepiece structure.

In addition to the intermediate reinforcing bars F, the lower edges of the several Patented Oct. 6, 1914.

walls are doubled, as indicated at a 6 c and d to provide lower reinforcement, and furthermore the ribs g hereinbefore described reinforce the upper portions of the side walls A'and B.

I claim A collapsible interior form for burial vaults, comprising side and end walls, each of which is provided with side extensions bent inwardly to form curved vertical bearings, the extremities of which. are bent flatwise and secured upon the inner surfaces of the walls, locking members comprising rods adapted for engagement vertically in the said wall bearings to lock the walls in operative position, forming handles, supplemental sections .secured against the inner surfaces of the side walls and having their upper portions bent outwardly from the upper edges of the side walls, and downwardly and inwardly against the outer surfaces of said side walls, reinforcing bars secured to the side walls and against the lower edges of the said supplemental sections, all for the purpose described. l

JAMES GUTHRIE JOHNS-UN. Witnesses:

J. Lt MARTIN, CHARLES A. laws.

and having angular ends 

